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The displacement y of wave trvelling in ...

The displacement y of wave trvelling in the x-direction is given by `y=10^(-4) sin (600t-2x+frac(pi)(3))` metres, where x is expressed in metres and t in seconds. The speed of the wave motion, in `ms^(-1)`, is

A

200

B

300

C

600

D

1200

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